What is Kevlar?
Kevlar a trademark of para-aramid synthetic fiber, is related to other aramids such as Nomex...
Read more...Last update: April 25th, 2019 at 2:00 am
What is Actinium?
Actinium is a radioactive chemical element. The symbol for Actinium...
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What is Americium?
Americium is a synthetic radioactive metallic element. The symbol for...
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What is Astatine?
Astatine is a radioactive chemical element. The symbol for Astatine...
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What is Berkelium?
Berkelium is a synthetic radioactive metallic element. It has the...
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